Subaru STi EJ257 2.71L Stroker Kit by Brian Crower

The BC stroker kit for the Subaru EJ25 engine utilizes a custom, 83mm monster stroke, steel billet crankshaft, not a reworked factory EJ25 crank. Depending on bore size that you decide, the BC kit will take you up to a 2.71L with a safe 102mm bore.

As usual, each BC kit features custom CP forged aluminum pistons, premium alloy wrist pins, full ring pack and buttons. Big time power and torque gains. BC ProH2K rods rated to 600 horsepower, BC Pro Series rods rated to 800+ horsepower.

Features

• BC 4340 billet steel crankshaft (83mm stroke)
• BC 4340 ProH2K or Pro H625+ connecting rods
• Aluminum forged pistons
• Ductile iron plasma top rings, tapered second ring, low tension oil rings
• Fully system balanced and ready to install

Benefits

• High quality construction and components
• Brings your vehicle up to a 2.71L displacement with a safe 102mm bore

Applications

• 2004 - 2021 Subaru STI

What's In The Box?

• 1 - 4340 billet crank (83mm stroke)
• 1 - Set of connecting rods
• 1 - set of pistons and rings

Warranty

• Manufacturer Standard Warranty